Boiler



2 Sheets-Sheet l INVENTOR EH. Glyn n ATTORNEYS E. A. GLYNN BOILER l\ v R Q\ ..l..:::..:.:.... 1:1.

7l/l/l/l/ll/l/l/l/ll/A ,lllllllllllflrllllrld ig-2%? wiw Jan. 17, 195!) E. A. GLYNN 2,494,654

BOILER Filed Sept. '7, 19 .8 2 Sheets-Sheet 2 Glynn ATTORNEYS Patented Jan. 17, 1950 BOILER Edwin A. Glynn, Lodi, Calif., assignor to Super Mold Corporation of California, Lodi, Calif., a corporation of California Application September 7, 1948, Serial No. 48,072

11 Claims.

This invention is directed to, and it is an object to provide, a novel, small-type steam boiler; the 'boiler being a compact, unitary, prefabricated structure especially designed for use to supply steam to shop equipment, such as tire tread vulcanizing machines or the like.

Another object of the invention is to provide a boiler which includes a novel structure to house and support the water chamber of the device in insulated relation to the atmosphere;

said chamber being of an improved design having a high safety factor.

A further object of the invention is to provide a relatively small, unitary boiler which is designed for ease and economy of manufacture on a production basis; the device including a minimum of parts, and these being capable of ready manufacture and assembly.

An additional object of the invention is to provide a novel, electrically heated boiler.

It is also an object to provide a boiler which is of relatively light weight with respect to its capacity.

A further object of the invention is to provide a practical and reliable boiler, and one which will be exceedingly effective for the purpose for which it is designed.

These objects are accomplished by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following specification and claims.

In the drawings:

Fig. 1 is a sectional elevation of the boiler.

Fig. 2 is an end elevation, with the protector box removed, at the end from which the electric terminals project.

Fig. 3 is a cross section on line 3-3 of Fig. 1.

Referring now more particularly to the characters of reference on the drawings, the novel boiler comprises a pair of spaced, upstanding end walls or plates I and 2 disposed in parallel facing relation. At their lower ends the end walls I and 2 are formed with out-turned flanges 3 formed with openings 4, by means of which securing elements may attach said flanges to the floor.

On their adjacent faces, and in matching relation, the end walls I and 2 carry annular, inwardly projecting supporting flanges 5, and a tubular shell or jacket 6 extends full length between the end walls I and 2, with said annular supporting flanges 5 projecting into opposite ends of said jacket. The jacket 5 is connected to the flanges 5 by sheet metal screws '1, or the like.

A horizontally elongated, cylindrical water chamber, indicated generally at 8, is disposed within the enclosure formed by the end walls I and 2, and the jacket 6; said chamber 8 being spaced, in said enclosure, from said parts, and such space being filled with an insulation material 9.

The horizontally elongated, cylindrical water chamber 8 comprises a pair of cast steel, domed heads I0 and II axially spaced apart and opening toward each other. Adjacent ends of the heads I0 and II are annularly grooved, as at I2, and a tubular body, preferably of heavy-duty sheet metal, extends between the heads I0 and II; the ends of said body I3 engaging in the annular grooves I2, and being welded therein, as at I4.

To assure of rigidity of the chamber 8 within the enclosure formed by the end walls I and 2, and the jacket 6, the heads I0 and I I are formed, on the outside, with integral, transversely spaced feet I5 which project toward, and abut, the adjacent end wall I or 2 in matching relation; such feet I5 being attached to the corresponding end wall by cap screws I 6. In this manner, the chamber 8 is always maintained in a fixed, predetermined position.

The tubular body I3, of the chamber 8, is provided, top and bottom, with fittings I! which extend through the insulation material 9 and jacket 6 for attachment of the exterior parts conventional to boilers; for example, a pressure relief valve I8; a pressure gauge I9; and flow fittings 20.

At opposite ends the heads I0 and I I are formed with integral connection bosses; the bosses on the head I0 being indicated at 2| and 22; there bein a plurality of the latter. The head II includes a single connection boss 23. The connection bosses ZI, 22, and 23 project from the heads to the corresponding end wall.

A thermo-well 24 is threaded into the connection boss 21, while screw plugs 25 are threaded intothe bosses 22; said plugs 25 having electric heating elements 26, of Calrod type, projecting into the chamber 8 therefrom. The electric heating elements 26 are elongated, and extend from the plugs 25 substantially full length of the chamber 8 generally in the lower half thereof.

The electric terminals 2'! for the heating ele-=- ments 26 project outwardly from the screw plugs 25.

A water glass assembly, indicated generally at 28, connects between the boss 23 and one of the fittings IT at the top of the chamber 8.

The end wall I is extended some distance above the top of the jacket 6 in the form of a vertical 3 panel 29, and said panel, together with the terminals 2! which project from the screw plugs 25, are normally enclosed, in safety relation, within a protector box 30, removably attached to the end wall I and panel 29 by flanges 3| and securing screws 32.

The electric wiring for the boiler leads into the protector box 30 through a fitting 33 at the top of the panel 29; there being a magnetic contactor, indicated diagrammatically at 34, included in the wiring circuit and mounted on the panel 29 within the box 30. The wiring system of the boiler has been omitted for the sake of clarity, and the details of such system form no part of the present invention; it sufiicing to state that the magnetic contactor 34 acts to controlthe supply of electric current fed to the heating elements 21.

The structure described provides a small-size, efficient, relatively high-capacity boiler, whose compact unitary arrangement makes it very desirable for use to supply steam to shop equipment, such as tire tread vulcanizing machines or the like. The boiler is designed with a view towards simplicity and economy of manufacture; a substantial number of the parts being capable of fabrication from sheet metal.

The boiler is practical and reliable in operation, and it has a high safety factor.

From the foregoing description it will be readily seen that there has been produced such a device as substantially fulfills the objects of the invention as set forth herein.

While this specification sets forth in detail the present and preferred construction of the device, still in practice such deviations from such detail may be resorted to as do not form a departure from the spirit of the invention, as defined by the appended claims.

Having thus described the invention, the following is claimed as new and useful, and upon which Letters Patent are desired:

1. A unitary boiler comprising a pair of upstanding end plates disposed in'facing, spacedapart relation, annular supporting flanges on the end plates projecting toward each other in alinement, a tubular jacket extending between the end plates, the annular supporting flanges and adjacent ends of the jacket telescoping in close fitting relation, means securing the same together, a water chamber in spaced relation within the enclosure formed by the end plates and jacket, and insulation between the chamber and said enclosure.

2. A boiler, as in claim 1, in which the end plates project below the jacket, and floor engaging members on the lower edges of said end plates.

3. A boiler, as in claim 1, in which one end plate extends above the jacket as a mounting panel for boiler control means.

4. A unitary boiler comprising a pair of upstanding end plates disposed in facing, spacedapart relation, a tubular jacket extending between the end plates, means securing the jacket at its ends to the end plates, a water chamber in spaced relation within the enclosure formed by the end plates and jacket, and insulation between the chamber and said enclosure; the end plates extending below the jacket as boiler supports.

5. A unitary boiler comprising a pair of upstanding end plates disposed in facing, spacedapart relation, a tubular jacket extending between the end plates, means securing the jacket at its ends to the end plates, a water chamber in spaced relation within the enclosure formed by the end plates and jacket, and insulation between the chamber and said enclosure; the end plates extending below the jacket as boiler supports, and floor flanges on the lower edges of said plates.

6. A unitary boiler comprising a pair of upstanding end plates disposed in facing, spacedapart relation, a tubular jacket extending be tween the end plates, means securing the jacket at its ends to theend plates, a water chamber in spaced relation within the enclosure formed by the end plates and jacket, and insulation between the chamber and said enclosure; one end plate extending above the jacket as a panel.

'7. A unitary boiler comprising a pair of upstanding end plates disposed in facing, spacedapart relation, a tubular jacket extending between the end plates, means securing the jacket at its endsto the end plates, a water chamber in spaced relation within the enclosure formed by the end plates and jacket, and insulation between the chamber and said enclosure; one end plate extending above the jacket as a panel, and a protector box over said panel and an adjacent part of said one end plate.

8. A boiler, as in claim 7, in which the boiler is electrically actuated; there being terminals projecting from said one end plate into said protector box.

9. A unitary boiler comprising a pair of up standing end plates disposed in facing, spacedapart relation, a tubular jacket extending between the end plates, means securing the jacket at its ends to the end plates, a water chamber in spaced relation within the enclosure formed by the end plates and jacket, and insulation between the chamber and said enclosure; there being attachment feet on opposite ends of the chamber extending to, and secured in connection with, ad-

r jacent end plates.

10. A unitary boiler comprising an outer shell which includes end plates, a water chamber dis posed within and spaced from the outer shell including the end plates, such water chamber consisting of cast steel end heads, a cylindrical intermediate member extending between and welded to the end heads, the end heads including feet cast integral therewith and projecting to the end plates of the outer shell, means connecting the feet to the end plates, insulation material between the water chamber'and the outer shell, and heating elements supported in one of the end heads and enclosed within the water chamber.

11. A boiler as in claim 10 including connection bosses cast integral with the end heads and projecting to the end plates, the heating elements including screw plugs threaded into certain of said bosses.

EDWIN A. GLYNN.

REFERENCES CITED The following references are of record in th file of this patent:

UNITED STATES PATENTS I 

